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Annual Hawaii International Conference on System Sciences (HICSS)

作者： A.E.K. Sobel R.C. Linger Computer Science & Systems Analysis Department Miami University Oxford OH USA Software Engineering Institute Carnegie Mellon University Pittsburgh PA USA

Provides an overview of the technical articles and features presented in this minitrack.

ISBN: (纸本)0769509819

Provides an overview of the technical articles and features presented in this minitrack.

关键词： Documentation software testing Protocols Application software Automatic testing System testing Control theory Streaming media computer science software engineering

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Resource allocation for handling two QoS classes at a generic radio cell

Resource allocation for handling two QoS classes at a generi...

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IEEE Conference and Exhibition on Global Telecommunications (GLOBECOM)

作者： M. Cheung J.W. Mark Communications Software Group Cisco Systems Inc. San Jose CA USA Department of Electrical & Computer Engineering University of Waterloo Waterloo ONT Canada

Resource allocation plays an important role in call admission control (CAC). In a wireless environment where resource is scarce, an efficient resource allocation scheme is of critical importance. A movable boundary (NO) resource allocation scheme for handling real-time (RT) and non-real-time (NRT) traffic at the base station is proposed. Numerical results show that this scheme reduces the resource requirement and increases the utilization of NRT traffic significantly while maintaining the service performance of RT traffic.

关键词： Resource management Base stations Time division multiplexing Channel allocation systems engineering and theory Call admission control Communication system traffic control computer networks Communication networks Knowledge engineering

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A TV program generation system using digest video scenes and a scripting markup language

A TV program generation system using digest video scenes and...

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Annual Hawaii International Conference on System Sciences (HICSS)

作者： Y. Shirota T. Hashimoto A. Nadamoto T. Hattori A. Iizawa K. Tanaka K. Sumiya Software Research Center Imaging System Business Group Ricoh Company Limited Japan Division of Information and Media Science Graduate School of Science and Technology Kobe University Japan Department of Computer and Systems Engineering Graduate School of Science and Technology Kobe University Japan Division of Urban Information Systems Research Center for Urban Safety and Security Kobe University Japan

ISBN: (纸本)0769509819

This paper describes a TV program generation system using digest video scenes that are retrieved from video streams with the program indexes. The key features of the system are: (1) TV programs can be dynamically generated from digest video scenes selected by user preference. (2) Directions can be added using a happiness or sadness level based on the user preferences. (3) Personalized TV programs for an individual viewer can be made. The procedures taken by the system are as follows: (1) Conjunctive expressions between scenes are automatically generated; (2) Emotional expressions are automatically generated by user preference; (3) TV program metaphors are defined; (4) Direction templates corresponding to the metaphors are defined; (5) These expressions and definitions are coded using a markup language, and (6) Contents such as virtual characters and movies are synchronized. The resultant program can be shown on a TV set.

关键词： Layout Markup languages TV broadcasting Satellite broadcasting Information retrieval Broadcast technology Digital TV Companies Streaming media Character generation

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Direction control for an active docking behaviour based on the rotational component of log-polar optic flow 6th

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6th European Conference on computer Vision, ECCV 2000

作者： Barnes, Nick Sandini, Giulio Department of Computer Science and Software Engineering University of Melbourne VIC3010 Australia Department of Communication Computer and Systems Science University of Genova Via Opera Pia 13 Genova16145 Italy

ISBN: (纸本)3540676864

Docking is a fundamental requirement for a mobile robot in order to be able to interact with objects in its environment. In this paper we present an algorithm and implementation for a special case of the docking problem for ground-based robots. We require the robot to dock with a fixated environment point where only visual information is available. Specifically, camera pan/tilt information is unknown, as is the direction of motion with respect to the object and the robot’s velocity. Further, camera calibration is unavailable. The aim is to minimise the difference between the camera optical axis and the robot heading direction. This constitutes a behaviour for controlling robot direction based on fixation. This paper presents a full mathematical derivation of the method and implementation used. In its most general form, the method requires partial segmentation of the optical flow field. The experiments presented, however, assume partial knowledge as to whether points are closer to the camera than the fixation point or further away. There are many scenarios in robotic navigation where such assumptions are typical working conditions. We examine two cases: convex objects;and distant background/floor. The solution presented uses only the rotational component of optical flow from a log-polar sensor. Results are presented with real image and ray-traced image sequences. The robot is controlled based on a single component of optical flow over a small portion of the image, and thus is suited to real-time implementation. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Mobile robots

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An approach to specifying coordinated agent behaviour 3rd

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3rd Pacific Rim International Workshop on Multi-Agents, PRIMA 2000

作者： Yoshimura, Kenichi Rönnquist, Ralph Sonenberg, Liz Department of Computer Science and Software Engineering University of Melbourne Melbourne Australia Oriented Software Pty. Ltd 207 Bouverie St. Carlton Melbourne3053 Australia Department of Information Systems University of Melbourne Melbourne Australia

ISBN: (纸本)3540679111

‘Team oriented programming’ indicates a number of different approaches to the formation of teams of agents and their coordination in order to achieve specified goals. This paper describes a framework, called SimpleTeam, aimed at team oriented programming. SimpleTeam supports the writing of team plans that represent the activity of a group of agents or sub-teams in order to achieve a team goal, and provides a set of primitives to control concurrency, exception handling and so on. An example application is presented, with discussion of how the approach can help to simplify the design of coordinated behaviour in multi-agent systems. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Concurrency control

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Communicating dynamic behaviors: Are interactive multimedia presentations better than static mixed-mode presentations? 1

Communicating dynamic behaviors: Are interactive multimedia ...

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1st International Conference on Theory and Application of Diagrams, Diagrams 2000

作者： Hari Narayanan, N. Hegarty, Mary Intelligent and Interactive Systems Laboratory Department of Computer Science and Software Engineering Auburn University AuburnAL36849 United States Department of Psychology University of California Santa BarbaraCA93106 United States

ISBN: (纸本)3540679154

Static mixed-mode presentations consisting of verbal explanations illustrated with diagrams have long been used to communicate information. With the advent of multimedia, such presentations have become dynamic, by migrating from paper to the computer and by adding interactivity and animation. The conventional wisdom is that computer-based multimedia presentations are better than printed presentations. However, does the communicative power of mixed-mode representations stem from their careful design to match cognitive processes involved in comprehension or from their interactive and animated nature? This is an important issue that has never been investigated. This paper first presents a cognitive model of comprehension of mixed-mode representations. We describe how this model generates design guidelines for mixed-mode representations that present expository material in two domains - the concrete domain of mechanical systems and the abstract domain of computer algorithms. We then report on a series of studies that compared computer-based interactive multimedia presentations and their paper-based counterparts. Both were designed in accordance with the comprehension model and were compared against each other and against competing representational forms such as books, CD-ROMs, and animations. These studies indicate that the effectiveness of mixed-mode presentations has more to do with their match with comprehension processes than the medium of presentation. In other words, benefits of interactivity and animation are likely being overstated in the current milieu of fascination with multimedia. © Springer-Verlag Berlin Heidelberg 2000.

关键词： Animation

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Image quantization using Self-Splitting Competitive Learning

Image quantization using Self-Splitting Competitive Learning

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IEEE International Conference on systems, Man and Cybernetics

作者： Ya-Jun Zhang Zhi-Qiang Liu Intelligent Systems Laboratory Department of Computer Science and Software Engineering University of Melbourne VIC Australia

We have developed a new, robust clustering algorithm, Self-Splitting Competitive Learning (SSCL). It has shown great abilities in detecting not only isolated clusters, but overlapped clusters, curves and spherical shells. We apply SSCL to quantization of color images. The clustering algorithm iteratively partitions the color space into natural clusters without a prior information on the number of clusters. The algorithm starts with only a single color prototype and adaptively splits it into multiple prototypes during the learning process based on a split validity measure. It is able to discover all natural groups; each is associated with a color prototype. The experimental results show remarkably better performance as compared to several other existing clustering algorithms.

关键词： Prototypes Clustering algorithms Quantization Pixel Partitioning algorithms Iterative algorithms Image analysis Pattern analysis Image color analysis Gray-scale

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Evaluating modeling efficiency of a specific software architecture

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systems and computers in Japan 2000年第11期31卷 1-11页

作者： Kawakami, Masumi Yoshida, Atsushi Isoda, Sadahiro Knowledge-Based Info. Engineering Toyohashi University of Technology Toyohashi 441-8580 Japan Systems Development Laboratory Hitachi Ltd. Toyohashi University of Technology Wakayama University Nagoya University University of Tokyo Department of Computer Science University of Illinois Urbana IL United States Spec. Interest Grp. on Software Eng. Info. Processing Society of Japan

software architectural styles that represent structural characteristics of software programs range from specific ones that can be applied to a particular domain to generic ones that can be applied to any domain. If a specific architectural style is available for the target system to be developed, it is appropriate to apply it together with its associated modeling method. However, no quantitative evaluation on the efficiency of specific architectural styles has as yet been reported. This paper presents a quantitative comparison of two architectural styles: specific and generic software architectural styles. The comparison shows that a specific architectural style combined with its associated modeling method allows us to reduce modeling cost as much as a few scores of percent compared with the generic one combined with its modeling method. The improvement results from the characteristics that (1) a specific software architectural style requires less rewriting of modeling diagrams due to its inherent basic structure and (2) there is less redundant information among modeling diagrams.

关键词： Client server computer systems

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Fault-tolerant FFT data compression

Fault-tolerant FFT data compression

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Pacific Rim International Symposium on Dependable Computing

作者： G.R. Redinbo R. Manomohan Department of Electrical and Computer Engineering University of California Davis CA USA Internet Software Systems Hewlett Packard Cupertino CA USA

Transform coefficients carry important data characteristics but can also be compressed significantly in many remote sensing applications. Failures in the several computing facilities that execute lossy compression algorithms and support the transmission of Fourier transform data can corrupt the values beyond recovery at the final destination. Various methods for including fault tolerance at the data processing level are exemplified by describing a protected system that computes the FFT, truncates small coefficients and compresses the remaining nonzero coefficients using lossless arithmetic coding. Algorithmic checks within the FFT and arithmetic encoding and decoding operations are augmented with additional features between and across several subsystems involved in compressing and transmitting the FFT data. End-to-end error detection is achieved in this manner.

关键词： Fault tolerance Data compression Arithmetic Remote sensing Propagation losses Compression algorithms Fourier transforms Fault tolerant systems Data processing Protection

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Performance evaluation of line drawing recognition systems

Performance evaluation of line drawing recognition systems

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International Conference on Pattern Recognition

作者： A.K. Chhabra I.T. Phillips Bell Atlantic Network Systems Advanced Technology White Plains NY USA Computer Science Software Engineering Department Seattle University Seattle WA USA

ISBN: (纸本)0769507506

Presents the results of the third international graphics recognition contest. We evaluated the performance of four different vectorization systems on scanned images of CAD drawings. The EditCost Index was used for comparative evaluation of the systems. The performance curves of the systems on the test images are presented in this paper.

关键词： engineering drawings System testing Image recognition Image converters computer graphics Image generation computer science software engineering Time measurement Noise generators

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